www.saddlebackb2b.co.uk

Issued by Sectigo RSA Domain Validation Secure Server CA

About this certificate

This digital certificate with serial number 6d:b0:85:3b:70:da:4c:2a:d6:2f:e0:f4:2e:61:e1:51 was issued on by Sectigo Limited.

With 2 subject alternative names this certificate can be used to secure multiple fqdn's. This certificate has already expired and will cause a warning or error message in the browser it's still listed on this site to allow you to look back on previously issued certificates. If we have found any compliance issues with this certificate they will be shown below. I hope this certificate review is providing you the detailed information in a simple form you where looking for.


We have idenified some issues with this certificate:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=www.saddlebackb2b.co.uk

Sectigo Limited

Organization: Sectigo Limited
State / Province: Greater Manchester
Locality: Salford
Country: GB

This certificate has expire since

Certificate Details

Serial Number (hex): 6d:b0:85:3b:70:da:4c:2a:d6:2f:e0:f4:2e:61:e1:51
Serial Number (int): 145802398057523060441615027761490026833
Serial Number lenght: 127 bits, 16 octets

SubjectKeyId: 35:ae:50:9d:0c:d8:43:3d:7c:d3:af:b5:24:15:52:70:44:ec:03:03
AuthorityKeyId: 8d:8c:5e:c4:54:ad:8a:e1:77:e9:9b:f9:9b:05:e1:b8:01:8d:61:e1

Fingerprint (sha1): c2:bf:78:92:c6:f7:4f:84:14:43:f4:cc:ef:92:24:c3:eb:8f:50:7e
Fingerprint (sha256): 6a:89:07:2f:97:79:e5:eb:40:e3:a4:74:87:76:dd:aa:7c:00:c6:6e:a7:57:7d:d8:01:ec:db:64:cf:ad:fa:81

Issuing Certificate URL: http://crt.sectigo.com/SectigoRSADomainValidationSecureServerCA.crt

Revocation information

OCSP Server: http://ocsp.sectigo.com

Check the revocation status for certificate www.saddlebackb2b.co.uk

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.saddlebackb2b.co.uk

Public Key Algorithm

RSA

Key Size

2048

Signature Algorithm

SHA256 with RSA

Key Usage

Digital Signature
Key Encipherment

Extended Key Usages

Server Authentication
Client Authentication

Extensions

9 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

www.saddlebackb2b.co.uk
saddlebackb2b.co.uk

Other certificates including the domain name saddlebackb2b.co.uk

(limited to 100 certificates)
www.saddlebackb2b.co.uk
www.saddlebackb2b.co.uk
www.saddlebackb2b.co.uk
www.saddlebackb2b.co.uk
www.saddlebackb2b.co.uk
www.saddlebackb2b.co.uk
www.saddlebackb2b.co.uk
www.saddlebackb2b.co.uk
www.saddlebackb2b.co.uk

Certificate

The complete raw certificate details for www.saddlebackb2b.co.uk in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAzLyPeHKxRSHUSjDTar2l
8yEZ4ljAsc8FQQwN57srVCSm9zKa2Sc9oYSXBf183OBFKq549ctkyaP9i/dUMmHz
/oHGels7+BFm3jL+RLnOPyl2AbAh6FEs5Sdi5dLnQrrm8nLRSQ2YmoQ2qjooTxFf
K579GO+p1FGlbX1KRShpLUzT8eL+aOg+unlUhbjoSPFH/1SkA4WJjuoNn+Oudogq
VNwuWUaYyYk6+LxpbNJKWKg6OhaxTugbCzCrrqIjxzrUj88h6RS7VUVduR3JqCt4
bkfoBQcAgfY+2QADbPiXNckuaLXcE/a4IKZ7MuWzbTB39byHWcuvYtiEMLkk/mNM
VwIDAQAB
-----END PUBLIC KEY-----

ASN.1 decoded

 [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . [c:0|t:2|false] INTEGER 2
 . . . . . . . . [c:0|t:2|false] INTEGER 145802398057523060441615027761490026833
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption)
 . . . . . . . . . . . . [c:0|t:5|false] NULL 
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.6 (countryName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'GB'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.8 (stateOrProvinceName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Greater Manchester'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.7 (localityName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Salford'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.10 (organizationName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Sectigo Limited'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Sectigo RSA Domain Validation Secure Server CA'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-12-28 00:00:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2021-02-25 23:59:59 +0000 UTC
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'www.saddlebackb2b.co.uk'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.1 (rsaEncryption)
 . . . . . . . . . . . . . . . . [c:0|t:5|false] NULL 
 . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 25845596827427577831546421210359030819877678124849706586553968421073893942583738376719195957160957625305280475071205755790300976431475347680168438009330864350698510792370500168635217258511321439487620560233112128871895080385146774432403099108030395151806428693722381202981913940916988848004144964246795380660236418267810083544308028676627573700382564675848891461796133398223996605598831854206594459793328038072812230086660120363406595153462421648818579667560801079238257916365659254651335825292357141420713708144256741107266402779956632175781371597228781363627639728001211283834367023120310135266588580882104841358423
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 65537

 . . . . . . . . [c:2|t:3|true] ORAddress 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35 (authorityKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName 8d8c5ec454ad8ae177e99bf99b05e1b8018d61e1
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.14 (subjectKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							35ae509d0cd8433d7cd3afb52415527044ec0303
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.15 (keyUsage)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (4 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (3 bits)
							05a0
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19 (basicConstraints)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (2 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.37 (extKeyUsage)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.1 (serverAuth)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2 (clientAuth)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32 (certificatePolicies)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (66 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.6449.1.2.2.7
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'https://sectigo.com/CPS'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.23.140.1.2.1 (Domain Validation Certificates Policy)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1 (authorityInfoAccess)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (120 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2 (caIssuers)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://crt.sectigo.com/SectigoRSADomainValidationSecureServerCA.crt'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.1 (ocsp)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://ocsp.sectigo.com'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17 (subjectAltName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (48 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.saddlebackb2b.co.uk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'saddlebackb2b.co.uk'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f10077007d3ef2f88fff88556824c2c0ca9e5289792bc50e78097f2e6a9768997e22f0d70000016f4c8249d200000403004830460221009571e9e289f4dff085d63f7b9f63c68f4cd294a4a56ca9126b246ec848956ff0022100c8f91ab4f604380b037fa7100a33c0274ca60e34517ee2da4c3743408e1e9de20076004494652eb0eeceafc44007d8a8fe28c0dae682bed8cb31b53fd33396b5b681a80000016f4c8249ba0000040300473045022100804bcb4257f105482ee462a8123735826842b06712f12233e87b346ecadd53390220795f7d2e2f27d3c0c8e13bd139f05939c37dc632a45da6a0a5ee248b9de90ce7
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption)
 . . . . . . . . [c:0|t:5|false] NULL 
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		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